Mouthpiece for boiler-furnaces.



No. 699,500. Patented May 6, I902. W. H. DONLEY." MOUTHPIEGE FOR BOILER FURNACES.

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W. H. DONLEY.

MOUTHPIEGE FOR BOILER FURNACES.

A ncatioil filed Jan. 14, 1902. (No Model.) 2 Sheets-Sheet 2.

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lVlLlilAM DONLEY, OF SPRINGFIELD,MASSACHUSETTS.

MOUTHPIEQIE FOR'BOILER- -FURNACES.

SPECIFICATION forming part of Letters Patent No. 699,500, dated May 6, 1902. hpplicationiiled January 14,1902. Serial No. 89,670. (No model.)

To aZZ whom it may concern:

Be it known that 1, WILLIAM H. DONLEY, a citizen of the United States,residingatSpringfield, in the county of Hampden and State of Massachusetts, have invented certain new and useful Improvements in Mouthpieces for Boiler-Furnaces, of which the following is a specification.

My invention relates to improvements in inouthpieces for boiler-furnaces; and the ob ject of my invention is the provision of a mouthpiece constructed to be placedin the fore part or front of a furnace and which can be produced at a comparatively low price and which mouthpiece will prevent the usual waste of heat, thus proving a great saving in fuel; which will prevent the destruction of the lining of the door; whichwill save much repair to the furnace, and which will gener ally prove efficient and practical.

To attain the desired objects, the invention consists of a hollow braced'mouthpiece fitting in the furnace and serving to sustain the walls of the furnace and having means to allow a passage of water to insure the proper temperature of the mouthpiece and to prevent destruction of the same by excessive heat.

The invention further consists of a hollow water-lined mouthpiece adapted to be placed in the fore part of the furnace adjacent to the door and embodying novel features of construction and combination of parts, substantially as disclosed herein.

In order that the details of construction and the application of my mouthpiece may be thoroughly understood, as well as its many advantages be fully appreciated, I invite attention to the accompanying drawings.

Figure 1 represents a front View of a portion of a boiler and furnace with my novel mouthpiece applied, showing the manner of connection and the relations of parts whenin operative position. Fig. 2 represents a perspective view of the mouthpiece detached. Fig. 3 represents a vertical transverse sectional view of the mouthpiece. Fig. 4 represents a'vertical longitudinal sectional view thereof, and Fig. 5 represents a detail view showing the construction of the braces and partitions with the water passages of the mouthpiece.

Referring bynumerals to the drawings, in which similar numerals of reference denote corresponding parts in the several views, the numeral 1 designates the boiler, and 2 designates the mouthpiece, which is placed in the front of the furnace 3, adjacent to the door,

and leading from the boiler are the pipes 4,

which enter the hollow mouthpiece and supply the water for circulation through the said in a cool condition, this preventing excessive heat from contact with the lining of the door,

also that it will drive the heat in or retain it in the furnace, and thus save much fuel and also save considerable in repair to the furnace.

'My mouthpiece is of peculiar construction and is composed of the front section 7, having the inner wall 8, which is connected with the outer wall 9 by means of the braces 10, which also form a series of water chambers or jackets 11, the'said braces or division-walls being each provided with an outlet or opening 10, the purpose of which is to establish communication between the jackets or chambers and permit a free circulation of water to all the jackets, and the rear section is composed of a vertical wall 12, having an inner wall 13, which is similar to the inner wall of construction it will be seen that the mouthpiece is hollow and strongly braced by the horizontal andvertical division-walls and that a series of chambers or jackets are provided which permit the free circulation of Water through the entire mouthpiece. It will also be seen that the flow of water and the cleaning or removing of sediment from the mouthpiece is under perfect control.

My novel mouthpiece can be applied to the well-known and common construction of furnaces in general use at a low price and will add greatly to the effioiency of the furnace and to the life and usefulness thereof, and its many advantages will commend it as a much-needed and practical improvement.

I claim 1. The combination with a boiler-furnace,

a hollow metal mouthpiece fitting therein,and extending around the entire month of the furnace, a series of braces or division-walls in the mouthpiece having openings, and forming water jackets or chambers, and watersupply means, and the draw-off pipe for sediment or foreign matter.

2. The combination with a boiler-furnace, the mouthpiece having a hollow compartment extending around its entire construction, a

thereof.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM H. DONLEY.

WVitnesses:

HENRY G. WHITMAN, JEREMIAH H. WHITEHoUsE. 

